Milling machine



June l0, 1947. N. M. MARSILIUS 422,112

MILLING MACHINE Original Filed Aug. 28, 1941 3 Sheets-Sheet l *l fawn., m

June 10, 1947.

N. M. MARSILIUS MLLING MACHINE Original Filed Aug. 28, v1941 I5 Sheets-Sheet 2 NEWMAN M. MARsluu June 10, 1947. n A N, M, MAR5|L|U5 2,422,112

MILLING MACHINE Original Filed Aug. 28, 1941 I5 Sheets-Sheet 5 i /07 /08 im 'n NEWMAN M. MARSIUUE.

Patented June 10, 1947 MILLING MACHINE Newman M.' Marsilius, Trumbull, Conn.

Original application'AugustZS, 1941, Serial No.`

' 408,580, nowratent No. 2,353,480, dated July 11,1944. Divided and this applicationDecembve13116, `1943, `Serial No. 514,495

. i l VVThis invention relates to new and useful improvements in machines and has particular relation to milling machines. l

The objects and advantages of the invention will become apparent from a consideration of the following detailed description taken in connection with the accompanying drawings wherein a satisfactory embodiment ofthe invention is shown. However, it is to be understood that the invention `is not limited te the details disclosed but includes all such variations and modiiications as fall Within the spirit of the invention and the scope .of the appended claims.y

In the drawings: e y

Fig. l is aview partly in side elevation andpartly in longitudinal section showing a machine made in accordance with the invention;

Fig. 2 is an enlarged transverse sectional view taken as along the line 2 2 of Fig. l; and y Fig., 3 is a detail sectional view on a large scale, theview being `taken as along the line4 3-3 of Fig. l, but with parts omitted.

AThe present application isa division of my ,application serial Number 408,580 sled August 28, 194.1, new Patent No. 2,353,480 ef July 11, 1944.

Referring in detail to the drawings themilling machine of the invention, as herein disclosed,

comprises, generally, a base I0, a bed II on said base, a horizontal tool-head carrying slide I2 on `said bed, and a work carrying turret I3 mounted on the bed at the forward end of the slide. Carried by the forward end of the slide I2 is a too-lhead generally designated I4. The details of the lconstruction and operation of this tool-head are given in my parent application above identified particularlyv with the means for imparting horizontal movement to the slide I2.

Base I0, bed Il and slide I2 are hollow, preferably castings, and while the slide is movable longitudinally on the bed the latter is secured to the base as by the bolts I5. At its upper side the bed II is provided with undercut ways I6 and I'I in opposing relation and the lower side of the slide I2 is provided with rails I8 and I9 operating cn said ways. Preferably a gib 20 is employed between rail I9 and way Il for adjustment to take up for wear. It will be clear that the rails or eX- tensions I8 and I 9 prevent any vertical movement of the slide on the bed but thatthe slide is suplported by and movable longitudinally of the bed.

' secured as by boltsl 24 while the latter Ahas an opening 25 over which is bolted a combined plate and bearing bracketr26, secured 'in place as by bolts 2l. Mounted on the bracket 26 and secured as by bolts 29 is a bearing 28 in alignment with the bearing 23. 'A main camshaft 30 is rotatably mounted by the bearings 23 and 28. Bracket 26 may be removed along with bearing 28 for replacement of any part (hereinafter to be referred to) mounted on the shaft 30 or in fact for replacement of the shaft should that be desirable or necessary.

A key 3I secures to the shaft 30, for turning movement therewith, an indexing camr 32, a turret locking cam 33, a cam 34 for imparting vertical movement to the tool-head I4, a cam 35 for imparting horizontalv movement to slide I2 and a worm wheel 36 through which the shaft is driven. The cam 32 operates against a roller 31 on the upper end of a rack bar 38 and the cam 33 operates against a roller 39 for imparting movements to parts 40 and 4I for'locking the turret I3 in place and for releasing an indexing pawl (not shown) from indexing relation with the turret. The rack bar 38'operates in a housing 42. Cams 33 and 32 and the means operated and controlled by them form no particular partv of the present claimed invention although they form parts of the machine shown. However, they and their purpose and mode of operation are fully set forth.

in myparent application above mentioned and it is therefore thought they need not be further considered herein. f A l kIn the machine base I0 is an electric motor 43. Belts 44 trained over pulleys 45 on the shaft of the motor are also trained over pulleys-46 turnable about a shaft 4l extending horizontally into the bed. II of the machine from the rear thereof. Shaft 41 is mounted invoutside bracketA 48 and inside bracket 43 and within the bed II serves, as will appear, to drive'a rworm gear-'50 meshing with the worm Wheel 36 above mentioned. A sheet metal or other guard or casing 5I` encloses the above mentioned pulleys and belts and has an opening 52 giving access to the facedend portion 53 'ofthe shaft 4l' whereby the latter may be engaged by avwren'ch or the like for' manual turn'- any particularly job. l

Actually pulley 46 drives the shaft 41 through a eiuten 54 eueelemeut 55l of which is secured to the pulley andthe movable or shiftable element 56 ofwhich is keyedror otherwise'secured-to the sha/ftlll'land is shiftable'by a yoke 51 havingan .operatingrod 58 secured thereto. The details vof this clutch mechanism are fully disclosed in my parent application and will not be repeated herein. However, it will be clear that on manipulation of the rod 58 the pulley 46 may be connected with and disconnected from the shaft 41 to start and stopjthe-driving'pisaid shaftfandfth-us-of the entire Hitachi-he. #The Eforegoing vi-'s"`triie sineefr disconnecting or opening of the clutch the shaft 41 is no longer driven and the Ycam shaft 30 toll gether with the cams thereon will be stationary as worm wheel 36 will not be driven.

A rack 6l having its teeth disposed-downwardly i is secured to a wall 62 of the slide f2 by'bolts l 63. Preferably these boltspspsj zontal slots 64 in the bodym: D loosening of the bolts rife free tney justed forwardly and rearwardly on the slide to vary the stroke of the latter as will be umadejtfor appear. Riding against the cam is a roller 65 on ythe-*rear or inner` end' of a bar 66 having `sliig'withQtliemteethof"afrelal i @meter :'gee'rse Geredv te je essere shaft .69- mountdb'y 'abackt Til. Al's'o iie'd to ,eemfiiiefeele freetimeihefhefeeree le .wi- 1 be edije'neea efiauesifmg" annie ieaie'r site "te 'the aree-r 'gear' ri. 'es the ie'aer 4 f 1 said shaft within'the bracket and bearing means Vis a gear 84 meshing with the teeth of a vertically disposed rack also located Within said housing 80. Rack 85 has a tubular opening 5 86 therethrough and in which is located a sleeve 81 -lturnable in.the.rack but held .against longi- -tiidir-ial-ndveieit relltivethertoby a bottom ange 88 at the lower end of the`r`ak and a cap 69 at the upper vend of the rack. Threaded into -the sleeve 81 is a stem 90 carrying a roller 9i l-i'gfgainst the cam 34 above mentioned. The Y upperend 92 ofthe sleeve 81 is faced to be en- `igfa'gledy"a"tirrich or other tool for turning of "theesleeiewhreby-fits threaded engagement with f5 Y. empl) w-Hlresiilt in longitudinal adjustment stem ative to the rack 85 whereby to camjsgl-and thegear 84.

V'tfwi-ll'be understood that as the high part of taining `:t'l'iej roller Aon ef cam.l f conne with the adjustment 'idf' he frafk l it/iis 'this fis ease-mensheid @fram "the -een'feiior machine esv tirerieeesi ersten edits 'shown' tnei'exteffosf fe estive reiation of the latter to the y ty-e smeken rmi 'secured to Tthe Vme weil of the shaft 'I1 in a direction to have its gear 'I8 operate on the rack 'I9 of the tool-head in a manner to lower the latter to bring the tool 'I2 against the work.

At this time cam 35 acting against roller 65 advances the rack bar 66 to rotate gear 68 and thus gear 1I to have the latter acting through the rack bar 6I move the slide I2 forwardly carrying the tool I2 across the Work. When the cut has been made the high part of cam 34 recedes from under roller 9I and the weight 93 acting through chain 94 raises the tool-head I4 lifting the tool off the work and the high point of cam 35 receding from roller 65 the weight |03 acting through the chain 99 retracts the slide I2 and the tool-head I4 carried thereby, to their normal positions.

Having thus set forth the nature of my invention, what I claim is:

1. A tool actuating mechanism for a milling machine comprising a bed, a tool holding slide reciprocatable on said bed, a rack secured to said slide, a first gear mounted in said bed and engaging said rack, a second gear integral and concentric with said gear and of lesser diameter, a rack reciprocatedly mounted in said bed and engaging said second gear, a cam movably mounted in said bed and engaging an end of said second mentioned rack, an actuating means for said cam, whereby actuation of said cam reciprocates said second rack, causing rotation of said second gear to eifect rotation of said rst gear for the purpose of reciprocating said rst rack and said slide to an extent amplied by said gears s as to be greater than the extent of reciprocation of said second rack.

2. A milling machine comprising a bed, a reciprocatable tool holding slide, a rack secured to said slide and having teeth facing said bed, a first gear rotatably mounted in said bed and engaging said slide, a second gear of smaller diameter than said rst gear and concentric and integral therewith and adjacent thereto, a second rack slideably supported in said bed and engaging said second gear, a cam rotatably supported within said bed and disposed below said slide, said second rack having an end engaging said cam, and means for rotating said cam, whereby actuation of said cam reciprocates said second rack causing rotation of said second gear to effect rotation of said irst gear for the purpose of reciprocating said first rack and said slide to an extent amplified by said gears so as to be greater than the extent of reciprocation of said second rack.

NEWMAN M. MARSILIUS.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS 

